Combination radiospeaker and electric-liout fixture



April.2, 1929. R. H. SEER ,6

I COMBINATION RADIO SPEAKER AND ELECTRIC LIGHT FIXTURE Filed Feb. 27, 1928 62 My 0 44 11 0 /2Z%4/ 666/ Patented Apr. 2, 1929. l

' UNITED TE T PATENT i OFFI E;

eme H. seen, or MILWAUKEE, Wiscons n. communion nnniosrnnxnn AND inmormo monrrixnnnn.

v Al p ieation fikd February 27, 1928. Serial no. 51 502.

This invention pertainsto a combination radio loud speaker and electric light, fixture, and has primar ly for 1ts ob ect to provides novel structure of lighting fixture which serves as an amplifier forthe sound emitted from a reproducing element positioned therein. y i

A more specific object is to provide a: fix; t-ure of the foregoing character, wherein a circuitous passage, of maximum length, is

provided for the traverse of the sound waves,

thus insuring the maximum in tone quality. lVith the above and other obgeots n view, which w ll appear as the description proceeds, the invention resides in the novel construction combination and arrangement of principles thereof.

Figure 1 is a transverse sectionthrough a fixture constructed in accordance with the present invention, and a Figure 2 is aihottoni plan view with parts broken away and insection to more clearly illustrate the structural details.

While the present invention is illustrated asapplied itoc a ceiling type of fixture, itwill be evident as the description proceeds that the invention is equally applicable to a sus pended fixture.

Referring now more particularly to the accompanying drawings, the numeral 1 designates a circular fixture base provided with a vertical, peripheral flange adapted to abut the ceiling and in order to prevent vibration of the base and deaden the sound transmitted from the same, it is proposed to insert a padding 2 of felt, or other soft material, between the annular flange of the base and the ceiling. The base is secured to the ceiling in the conventional manner, by means of a threaded stem 3 passing through the center of the base and adapted to be secured to an outlet nipple (not shown), or other form of fixture. The base is supported on the threaded stem 3 by a flanged sleeve 4, and

may be clamped in adjust-ed positionby a locknutb. r a a V In actual practise it is proposed to form the fixture by casting the same of fibrous and l i plastic composition, such as is generally employed in ornamental fixtures of this type.

In the present instance, material of thisgeneral nature lends itself advantageously to the present structure, in that the sound passage I is formed or cast into tliejfixture, and'it iis Well known thata fibrous composition niate lic tone of the 'soundwaves.

rial prevents excessive vibration and metal .At desired 'ntervals around the base, tubu lar threaded stems 6 ma becast into'the base for the reception 0 ornamentalflight' sockets. These are preferably placed adjacent the peripheral edge ottheibase', to pera mit a maximum space for theformationof the amplifyang meanslj As best shown in gure 2, the "bottom face of the base 1 has formed thereinan inverted trough 7 ofcircuitous shape andextending from a restricted throat 8 loan inverted open 7 1nouth9. In order toobtain the maximum length of trough, the same follows thecircularcontour of the'base and then doubles back,

upon itself to the discharge mouth positibned closely adjacent the centerof the, base, thus resulting; in a trough ,oflapproximately twice the length of the outerstretch, and avoiding abrupt obstruction of the sound waves, i

"A'djacentthe throatend 8 is a transverse partition 10 adjacent 'which a recess 11 is formed for the 'l'eceptionlof a reproducing unit 12 provided with a threaded extension 1.3 screwed into the partitionll) anjcldcommunicating with thetrough. I

As best shown in Figure-1, the top of the trough 7 is inclined downwardly to terminate i flush with the face of thebase at the mouth'9, and depending from the face of the base are the spaced walls 14, arCuatein contour and;

gradually inclined downwardly to deliver the sound waves on a plane in approximate vertical alinement with the outlet openings:

of the fixture, which arrangementfurther V avoids abrupt objection of the sound waves and results 1n an even radial distribution of the same through the annular outlets in the fixture to be hereinafter described.

That portion of the face of the base, in which the trough Y is formed, is slightly recessed for the reception of a domed cover 15, which cover obscures the amplifying means from view, thus giving the fixture the appearance [a conventional light fixture, and at thesame time assisting in even distribution of the sound Waves in all directions.

In order to close the trough 7. a plateof a cardboard or fibre board is secured to the face of the base and engaged betweenthebase and a the dome 15. Preferably the cover 16 is eemer ted or otherwisepermanently secured tothe face of the base, thus preventing any possible escape of sound waves other; than 1 throughthelamplifying trough. I'hecover platelfi is arcuately slit at'17 and 18jto" form 1 jtl letabl9rwhich isjinclined downwardly and v semi-taro the lower edges of the depending sider tvallfs 14,thus forming a closure for the matter the trough, as Well as forthat part of the trough formed in the face ofthe base.

i g :Thfdome is secured to thebase by means trauma 2O threaded'on the lower end of I theflstemfi, andf as shown in Figure lthe vertical, peripheral Wall of the cover is pro videdr'with amiularly spaced outlet apertures arthrou h which t e sound Wavesare dis charged mall directions.

From the foregoing it willbe seen'that a very, simple fixture has been provided with a y y sound amplifying means, at'very little addi- {g tionalfcost over that ,of the conventional typeset fixtures, in that practically the only additionrequired is the loud speaking unit.

ItWillbe further a preciated that thepres entstructure' provi es a maximum length of i it; amplifying passage, with a very gradual taperand no abrupt obstruction to the sound a Waves, thus resulting in themost desirable tpnejquality and yvolume v to I the sound waves. Inorder to prevent pocketing, withconse I lieutfobstructing' of soundwaveswithin the domed cover 15, it is proposed to rovide a;

cone 23 engagingthe central part0 t'hecover 15 and held in )osition by the threaded stem 3.

Thilsthe soun waves'e uitted from thcmouth ii of thetrough 8 will be deflected outwardly "toward, the peripheral openings21 and to sonieextent through theoponings 21 formed the face of the cover.

, Iclaim:

:1 1". "A combination loud speaker and lighting fixture comprising a fixture base provided w1th-. a c1rcu1t0us trough, a cover for said trough, and a reproducing unit" communisite end of; saidtroughbeing open.

2. A combination loudspeaker and lighting fixture comprising a fixture base provided with a circuitous trough, a cover forhsaid 1' catingjwith one end of the trough, the oppotrough, a reproducing-unit communicating with one end of the trough, the opposite end of saidtrough being open,and a dome cover secured to saidbase to housesaid troughfan'd provided with spaced outlet apertures. 1* 3. A combination loudspeaker and light ing fixture comprising a fixture base of fibrous composition and havinga circuitous trough formed thereln, a cover for sa d trough,and

a reproducing unit communicating with'one end of the trough, the opposite "end of the troughbeing open. a a y n 4. A combinationloud speaker and lighting fixtui'e "comprising a fixture base of fibrous compositionv having a circuitous trough formed in the face thereof, a cover V for said-trough, a reproducing unit cornmunicating with one end of saidtrough, the opposite end of said trough being open, and

a domed cover secured tothe face ofsaid base to house said trough spaced outlet apertures. a

5. A combination loud speaker and lighting fixture comprisin fibrous composition aving a circuitous trough formedin the face thereof, avreproducing unit communicating with one end of said trough, the opposite end of said trough being open and extendingbelowthe face of said base, a cover for said trou h, and a domed cover secured to the face o saidbase to house said trough and provided with annularly spaced outlet apertures positioned in a horizontal plane with'the open end of said trough; y

Intcstimony that I claim the foregoingI have hereunto set my han'dat Milwaukee, in the county of Milwaukee and State of Wiscousin. Q

RICHARD SEER,

a fixture base of y and provided 

